◎ 题干
Nobody knows exactly how many years it will be ________ the Chinese football team enters the final
stage of the World Cup.
[     ]
A. when  
B. before
C. since  
D. until
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Nobody knows exactly how many years it will be ________ the Chinese football team enters the final stage of the World Cup.[ ]A. whenB. beforeC. sinceD. unti…”主要考查了你对  【从属连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。